Pump-head drive for rotary well-pumps



M. V. ANDREWS AND S. W. HOLMAN.

PUMP HEAD DRIVE FOR ROTARY WELL PUMPS. APPLICATION HLED MAR. 1i. 1920.

1,354,017, Patented Deo. 28,1920.

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y '/Allll ktrnu M. V.-ANDREWS AND S. W. HOLMAN. PUMP HEAD DRIVE FDRROTARY WELL PUMPS.

APPLICATION FILED MAR. II. I92o. 1,340l7, v Patented D60. 28, 1920.

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MOBIL V. .ANDREVIS AND STEEHEN W. HOLMAN, 0F MARMARTH, NORTH DAKOTA,ASSIGNORS TO MORA PUMP COMPANY, OF MARMARTH. NORTH DAKOTA.

PUMP-HEAD DRIVE FOR ROTARY WELL-PUMPS.

Application filed March 11, 1920.

To all whom t may concern Be it known that we, MOBIL V. AN- Drnws andSTEPHEN W. HOLMAN, citizens of the United States, residing at Marmarth,in the county of Slope and State of North Dakota, have invented certainnew and useful Improvements in Pump-Head Drives for Rotary Tell-Pumps,of which the following is a specification.

rl`his invention relates to water elevating pumps, and pertainsespecially to operating devices or pump head mechanism for operating`rotary pumps. i

The object of the invention is to provide cooperating gears assembledwithin a pump head for revolving the driving shaft of a rotary pumplocated in a well or cistern.

A further object of the invention is to provide the driving shaft of arotary pump with a pair of united'gears slidable on the shaft andmeshing with a pair of gears having independent `driving power, and tofurnish means for shifting the said united gears into mesh with one orthe other of said driven gears so as to operate said shaft either byhand or motive power as desired.

A still further object of the invention is to provide a pump head havingvertical shaft hangers and bearings formed therein between the hangers,and a water discharge conduit formed upon the outside of said head andadapted to be connected with a rotary pump driven by said shaft within awell.

Various other objects, advantages and irnproved results are attainablein the manufacture and practical application of the invention as will behereinafter pointed out.

1n the accompanying drawings forming part of this application:

Figure 1 is a perspective view of a pump head showing the invention asoperating a rotary pump in a well.

Fig. 2 is a vertical sectional view showing the pump shaft and operatinggears in elevation.

Fig. 3 is a detail sectional view of the shifting gears and keyed end ofthe shaft.

Fig. 4 is a detail top view of the gearing, with the pump head in crosssection.

Fig. 5 is a detail elevation of the shifting lever.

The same reference characters denote the same parts throughout theseveral views of the drawings.

Specification of Letters Patent.

Patented Dec. 28, 1920.

serial No. 364,961.

1n carrying out our invention we employ a hollow pump head as 1, havinga suitable detachable top cover 2, and a water discharge conduit 3 towhich may be coupled a water conveying pipe 4, and a pipe 5 connectingthe conduit with a rotary pump as 6 located in a water well. A pair ofshaft hangers is formed on the inner wallvof the head 1, and comprises atop hanger 7 forming ay journal with ball bearings 8 for a verticaldriving shaft 9, and a bottom hanger 10 in which the shaft is journaled.Centrally between the hangers 7 and 10 a bearing 11 is formed on theinner face of the head wall for a shifting lever 12, hereinafter moreparticularly referred to. The top hanger7 has mounted on the sidethereof a beveled gear 13 operated by a shaft 14 extending therefrom andproj ecting` through the head wall where it is provided with a crankhandle 15. The bottom hanger 10 has the inner end of a driven shaft 16journaled thereon, and this shaft is also journaled in the wall of thehead 1 and projects therefrom for the application of a driving pulley17. A beveled gear 18, like the gear 13, is secured to and operated bythe shaft 16, on the reverse side of the bottom to that occupied by thegear 13 with respect to the top hanger, so that the shaft 9 extendsvertically between the gears 13 and 18, and the shafts 14 and 16 extendat right angles to or perpendicular to the shaft 9 in oppositedirections. I

In order to operate the pump shaft 9 independently either by hand or bymotive power as desired, we interpose between the gears 13 and 18, apair of beveled gears 19 and 20. The gear 19 is bolted as at 21 to aneck 22 of the gear 20, and the neck is fitted with a collar 23 havingthe circular yoke 24 of the shifting lever 12 pivoted thereto as at 25.The united gears 19 and 2O are slidably secured to the shaft 9 by a key26, and the upper end of the shaft has a head piece 27 resting on thetop hanger 7. The shifting lever 12 has one end as 28 fulcrumed in thebearing 11, and the other or handle end engages notches 30 in the slot31 of the pump head through which the lever 12 projects. Other meanssuch as a toothed rack may be used for holding the lever in adjustedpositions.

Obviously by raising the hand lever 12, the gear 19 is made to mesh withthe gear 13,

which is revolved by the crank handle 15 independent of the gear 18, andwhen the lever 12 is lowered, the gear 20 is held 1n v mesh with thegear 18 which is revolved by the driven shaft 1G, independent of thegear 13, whereby the pump shaft may be revolved in the same directioneither by hand or by motive power, without altering or changing themechanism, but by merely raising and loweringthe hand lever 12 forshifting the sliding gears into and out of mesh respectively with thedriven gears 18 and 18, thus leaving one or the other of the tion of theinvention as may not seem inconsistent with the appended claims.

Having thus described our invention what we claim as new and desire tosecure by=Let ters Patent is:- f

1. In pump head mechanism for operating rotary well pumps, a pair ofgearsmounted within the pump head, the axis plane of one gear beingabovethe axis plane of the other gear and said 'gears being offset from acentral vertical plane therebetween, a vertical shaft revoluble in saidcentral plane, a pair of united gears slidably secured to said shaft,and means operated from the outside of the pump head for shifting theunited gears into mesh with one or the other of the gears of said pair.

2. In pump head mechanism for operating rotary well pumps, a pair oflgears offset horizontally and vertically with respect to each other, arotary vertical shaft extending centrally between said gears, a pair ofgears slidably keyed to the portion of the shaft between the said offsetgears, and means for sliding the keyed gears so that one of the keyedgears will mesh with the offset gear adjacent thereto and the other ofthe keyed f' gears will mesh with the other offset gear, for revolvingsaid shaft in the same direction.

3. ln pump head mechanism for operating rotary well pumps, a pair ofgears offset horizontally and vertically with respect to each other, arotary vertical shaft extending centrally between said gears, a pair ofgears one of which has a neck extension to which the other of said gearsis secured, a collar on the neck between said gears, and a hand leverpivoted to the collar and fulcrumed to the wall of the pump head forsliding said secured gears on said shaft inte and out of mesh with saidoffset gears.

4. A pump head having a pair of shaft hangers lspaced apart verticallyand projecting inwardly ifrom the wall of said head, a fulcrum bearingin said wall centrally between the hangers, a revoluble shaft journaledin said hangers, a driven gear supported by each hanger, power-shiftinggears slidable on the shaft between said driven gears, and a hand leverpivoted to the shifting gears and fulcrumed in said bearing.

5. The combination with a pump head, and a rotary well pump, ofmechanism for operating the pump comprising a vertical shaft journaledin the head and connected with the pump, a pair of gears revolublymounted in the head` with the axis of each gear perpendicular to theshaft, said gears being' spaced apart vertically on opposite sides ofthe shaft, a pair of pinions slidable on the shaft, an adjusting leverfulcrumed in the head and projecting therefrom for sliding the pinionsinto and out of mesh with the gears, means for pivotally connecting thelever with the pinions, and means for holding the lever in adjustedpositions.

ln witness whereof we hereunto set our hands in the presence of twowitnesses.

MORIL V. ANDREWS. STEPHEN l. HOLMAN.

Witnesses l N. A. PARK, MARTIN O. GRADY.

